//按钮控制左侧菜单隐藏显示状态
	var left_box = 1;
	var left_box2 = 200;
	var frmBody = parent.document.getElementById('frame-body');
	var time;
	var time2;

	function show(){
		frmBody.cols=left_box+", 10, *";
		left_box = left_box + 30;
		if(left_box > 200){
			clearInterval(time);
			frmBody.cols="200, 10, *";
		}
	}
	
	function hide(){
		frmBody.cols=left_box2+", 10, *";
		left_box2 = left_box2 - 30;
		if(left_box2 < 20){
			clearInterval(time2);
			frmBody.cols="0, 10, *";
		}
	}
	
	function bbb(){
		if(frmBody.cols == "0, 10, *"){
			time = setInterval('show()',1);
			left_box2 = 200;
			document.getElementById('img_btn').src = 'images/jiantou1.jpg';
		}
		else{
			time2 = setInterval('hide()',1);
			left_box = 1;
			document.getElementById('img_btn').src = 'images/jiantou2.jpg';
		}
	}

	function toggleMenu(){
		bbb(frmBody);
	}
